基本解释[计算机科学技术]专题分级图英汉例句双语例句Based on the previous research of classification, stratified two-stage sampling is introduced into the accuracy assessment of thematic map.在以上分类研究的基础上，引入分层二阶随机抽样方法改善专题图的精度评价效果。thematic classification map更多例句专业释义计算机科学技术专题分级图